#include <algorithm>

class InputParser{
 public:
  InputParser (int &argc, char **argv){
    for (int i=1; i < argc; ++i)
      this->tokens.push_back(std::string(argv[i]));
  }
  /// @author iain
  const std::string& getCmdOption(const std::string &option) const{
    std::vector<std::string>::const_iterator itr;
    itr =  std::find(this->tokens.begin(), this->tokens.end(), option);
    if (itr != this->tokens.end() && ++itr != this->tokens.end()){
      return *itr;
    }
    static const std::string empty_string("");
    return empty_string;
  }
  /// @author iain
  bool cmdOptionExists(const std::string &option) const{
    return std::find(this->tokens.begin(), this->tokens.end(), option)
        != this->tokens.end();
  }
 private:
  std::vector <std::string> tokens;
};